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Finding the Fourth Proportional to 30,890.86, 46,300.44 and 14,215.88

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Solution

The fourth proportional to 30,890.86, 46,300.44 and 14,215.88 is: 21,307.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890.86 : 46,300.44 = 14,215.88 : x
  2. Step 2: Convert to fraction form
    30,890.86/46,300.44 = 14,215.88/x
  3. Step 3: Cross multiply
    30,890.86x = 46,300.44 × 14,215.88
  4. Step 4: Simplify right side
    30,890.86x = 658,201,498.99
  5. Step 5: Solve for x
    x = 658,201,498.99/30,890.86
  6. Step 6: Final answer
    x = 21,307.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.